Tinybot Desktop Mini 3D Printer

by butchja

Printable files (27)

  • stl

    bed_carriage_v2.stl

    2.3 Mo · 9 468 downloads

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  • stl

    bed_carriage_belt_locks.stl

    103 Ko · 9 435 downloads

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  • stl

    bowden_strain_relief.stl

    525 Ko · 2 745 downloads

    Download
  • stl

    controller_mount_2x.stl

    71 Ko · 9 435 downloads

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  • stl

    drag_chain_x_z_7_10.stl

    151 Ko · 9 430 downloads

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  • stl

    LCD_lid.stl

    242 Ko · 9 436 downloads

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  • stl

    LCD_case.stl

    485 Ko · 9 429 downloads

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  • stl

    endstop-adjust.stl

    58 Ko · 9 418 downloads

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  • stl

    endstop-mount.stl

    142 Ko · 9 420 downloads

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  • stl

    foot.stl

    42 Ko · 9 408 downloads

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  • stl

    phead_cable_clamp.stl

    481 Ko · 9 413 downloads

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  • stl

    phead_fan_duct_v2.stl

    116 Ko · 9 397 downloads

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  • stl

    phead_backplate_v2.stl

    450 Ko · 7 172 downloads

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  • stl

    phead_hotend_clamp_v3.stl

    341 Ko · 7 173 downloads

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  • stl

    phead_x_carriage_drag_chain.stl

    6.8 Mo · 9 414 downloads

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  • stl

    titan_bowden_mount.stl

    160 Ko · 9 383 downloads

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  • stl

    x_joiner_left_v2_1.stl

    1016 Ko · 9 093 downloads

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  • stl

    x_joiner_right.stl

    230 Ko · 9 377 downloads

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  • stl

    x_tensioner_v2.stl

    226 Ko · 9 371 downloads

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  • stl

    y_endstop_holder.stl

    242 Ko · 9 359 downloads

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  • stl

    y_idler_back.stl

    157 Ko · 9 351 downloads

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  • stl

    y_joiner_back_2040.stl

    391 Ko · 9 362 downloads

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  • stl

    y_joiner_front_v2_2.stl

    433 Ko · 9 349 downloads

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  • stl

    z_chain_mount.stl

    141 Ko · 7 805 downloads

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  • stl

    z-motor_bearing2.stl

    295 Ko · 9 345 downloads

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  • stl

    z-motor_mount_2040_v1_1.stl

    367 Ko · 9 332 downloads

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  • step

    Tinybot_Assembly.stp

    53.3 Mo · 39 downloads

    Download

Description

This is a small size desktop 3D printer. I have noticed most of the parts I print are small and I was looking for a second 3D printer.

Features

Build Volume
X: 100
Y: 100
Z: 100

Quick and Accurate
It uses a short bowden tube setup with a high torque extruder. Thus it was possible to design a light weight printhead for quick travel moves. Belt tensioners are integrated as well as an adjustable Z endstop.

Silent
Uses Trinamic's TMC2208 stepper motor drivers with high torque and speed in ultra silent operation.

Clean
Comes with cable management. All axis use drag chains for durable and clean wire guidings.

Affordable
Common parts

Easy to use
preconfigured Marlin firmware and Slic3r profiles

Bill of Material

Download latest BOM file with Aliexpress links

Electronics

  • Arduino 2560 + RAMPS 1.4
  • 1x Radial Fan 5010 12V/24V
  • 1x Axial Fan 3010 12V
  • 3x Stepper Motor Driver Board TMC2208
  • 1x Stepper Motor Driver Board A4988
  • 1x LCD Adapter
  • 1x MKS Mini 12864 LCD with Cables
  • 1x SD-Card
  • 3x End Stop RepRap Style

Extruder and Hotend

  • E3D Titan (for Bowden Setup)
  • E3D V6 with 0.4mm Nozzle
  • E3D V6 Silicone Sock
  • Teflon Bowden Tube do=4mm di=1.9mm l~250mm

Power Supply
LED supply Power Brick

  • 12V with 5A without heated bed
    --or--
  • 12V with 10A for a printer with heated bed

Drivetrain

  • 2x GT2 Pulley 20T 5mm bore w=6mm
  • 5x GT2 Idler 20T 5mm bore w=6mm
  • 5m GT2 Belt w=6mm
  • 6x LM8LUU Linear Bearings
  • 1x T8 Threaded Rod with 8mm Lead (4 Start) l=200mm
  • 1x T8 Lead Screw (4 Start)
  • 2x KFL08 Bearing Mount
  • 1x 8mm/5mm Flexible Shaft Coupler (these simple ones)

Stepper Motors

  • X: NEMA 17 28mm 10mH, 0.6A, 25Ncm
  • Y: NEMA 17 28mm 10mH, 0.6A, 25Ncm
  • Z: NEMA 17 28mm 10mH, 0.6A, 25Ncm
  • E: NEMA 17 20mm 4.5mH, 1.0A, 13Ncm

Heated Bed

  • 120mm Heated Bed (approx. 48W)
  • Insulation Material underneath (wind shield cover, PU foam, cardboard, etc.)
  • Print Surface to your liking (PEI, BuildTak, PVA glue)

Cable Management

  • Drag Chain 7x7 for X, Y
  • Drag Chain 10x10 for Z
  • Cable Ties

Metal Goods

  • 1x Aluminum Profile 6mm slot 2020 235mm for X
  • 1x Aluminum Profile 6mm slot 2020 240mm for Y
  • 1x Aluminum Profile 6mm slot 2040 290mm for Z
  • 1x Aluminum Profile 6mm slot 2040 85mm for YZ
  • 2x 8mm smooth rod 225mm for X
  • 2x 8mm smooth rod 215mm for Y
  • 2x 8mm smooth rod 250mm for Z
  • 3x Straight Steel Bracket
  • 4x L shaped Steel Bracket
  • 4x T Slot Corners for 2020 Profile
  • 100x Hammernuts M5
  • M3, M5 Screws (M3x10, M3x20, M5x8, M5x10, M5x20)
  • M3, M5 Nuts
Configuration

Reference Voltages of Stepper Drivers

  • X: Trinamic TMC2208: 0.8V
  • Y: Trinamic TMC2208: 0.8V
  • Z: Trinamic TMC2208: 0.8V
  • E: Allegro A4988: 0.65V

Firmware
Download latest configuration.h and configuration_adv.h for Marlin 1.1.9 in Files Section

BOM
Download latest bom.ods in Files Section

Assembly
Find a 3D PDF in the download section. Use it for the arrangement of the parts. You need a compatible reader, most third party does not support 3D. I needed to install Adobe Reader.

Filment path: for better print quality with hard to rotate filament spool holders, mount the bowden strain relief to the 2040 Z exstrusion, above the ramps board.

Know Issues

  • Display (SD-Card) Circuit Board needs to be cut or use some rubber feets

Changelog
2019/01/12 added missing chain mount for Z axis
2019/02/10 improved hotend heatsink airflow, cleaned up BOM
2019/07/28 fixed aluminum profile type
2019/12/20 added bowden filament strain relief

Tags

#2020 #3d printer #cartesian